A very good and reliable UPS so far (2 months, 1 blackout, and 2 fluctuations).
It powers two computers (one gaming with 850W Gold Active PFC, core i7 7700k, 32GB DDR4-2133, 3 SSD 528G, 1 HDD 3TB, and GTX 1660Ti OC 6GB, and the other with 500W Bronze A-PFC, i5 4770K, 16GB DDR3, GTX 770 OC 4GB) and 3 monitors, 2 DELL S2721DGFA and one HP 24. Overall, measuring with an ammeter on each system's power strip, in normal usage with everything turned on, it did not exceed 420W, while under full load, the gaming system in benchmark and the regular one on YouTube did not exceed 560W. In normal usage, it lasted about 12 minutes until the alarm became more frequent (indicating low battery). The next day, after the battery was fully charged, it lasted 5 minutes under full load before it started beeping more frequently.
I also tested it on a 77" SONY OLED with 170W power consumption, but because it produces modified sine wave, it does not flash the panel during power outages.
It is silent unless there is a power interruption, where it notifies you.